Zire 72 as a hands free module?

I have a zire 72 from my brother, and I was wondering if I could use it as a hands free blutooth for my phone, the att Tilt. Also since it has a sd reader and a headphone jack (my DIN has aux in) that I could use it as a pseudo-ipod for my truck.
So what i need help is:
-How to convert zire 72 into a headset profile for bluetooth
-get it to play music, then interrupt (pause) for a call.